Answer:unknown at the moment....Step-by-step explanation:I haven't worked out the answer myself but here are the steps to follow for you to find out the answer.First step is to find the angle of 'A'. Do this by using the cosine rule on the smaller triangle.Formula for this is;cos(A) = b2 + c2 – a2 2bcSecond Step is to find the length between AC. Do this by using the Sine Rule on the large triangle as a whole.Formula for this is; a = b = c Sin(A) Sin(B) Sin(C)Label the large triangle as CA=b and CB=a This is so you have the length and angles of all parts but the one section in which you're trying to find, this should be the basis of your sine formula but fill in the angle of 'A' which you found before. 65m = b Sin(A) Sin(68°) now get 'b' by itself 65m (Sin(68°)) = b Sin(A) Third step. Now that you have the length of b or AC, minus the length 27m to find the length of CD. Hope this helps :)